The internal evidence of those orations proves to a demonstration that the study and contemplation of the works of creation, and of the power and wisdom of God revealed and manifested in those works, made a great part of the religious devotion of the times in which they were written; and it was this devotional study and contemplation that led to the discovery of the principles upon which what are now called Sciences are established; and it is to the discovery of these principles that almost all the Arts that contribute to the convenience of human life owe their existence.

Every principal art has some science for its parent, though the person who mechanically performs the work does not always, and but very seldom, perceive the connection.
It is a fraud of the Christian system to call the sciences 'human inventions;' it is only the application of them that is human.
Every science has for its basis a system of principles as fixed and unalterable as those by which the universe is regulated and governed.
Man cannot make principles, he can only discover them.
For example: Every person who looks at an almanack sees an account when an eclipse will take place, and he sees also that it never fails to take place according to the account there given.

This shows that man is acquainted with the laws by which the heavenly bodies move.

But it would be something worse than ignorance, were any church on earth to say that those laws are an human invention.
It would also be ignorance, or something worse, to say that the scientific principles, by the aid of which man is enabled to calculate and foreknow when an eclipse will take place, are an human invention.
Man cannot invent any thing that is eternal and immutable; and the scientific principles he employs for this purpose must, and are, of necessity, as eternal and immutable as the laws by which the heavenly bodies move, or they could not be used as they are to ascertain the time when, and the manner how, an eclipse will take place.
The scientific principles that man employs to obtain the foreknowledge of an eclipse, or of any thing else relating to the motion of the heavenly bodies, are contained chiefly in that part of science that is called trigonometry, or the properties of a triangle, which, when applied to the study of the heavenly bodies, is called astronomy; when applied to direct the course of a ship on the ocean, it is called navigation; when applied to the construction of figures drawn by a rule and compass, it is called geometry; when applied to the construction of plans of edifices, it is called architecture; when applied to the measurement of any portion of the surface of the earth, it is called land-surveying.

In fine, it is the soul of science.